Metasediments of the deep crustal section of Southern Karnataka

A review of the rocks of supracrustal origin in the amphibolite and granulite facies terrane in southern Karnataka was presented. In addition to introducing the metasediments in the field area of the workshop, a review was presented of the common occurrence of metasediments in amphibolite and granulite facies rocks worldwide. Models of granulite metamorphism must include a mechanism for the burial of these sediments to the depths recorded by the geobarometers in granulite metamorphism in addition to their reexposure at the surface. Unfortunately, the common occurrence of supracrustals in granulite facies rocks, sometimes with remarkably little deformation was deemed significant

Synthesis Of Nano Bismuth Ferrite Multiferroics By Microcontroller Based Thermogravimetric Analyzer

Microcontroller based thermogravimetric analyzer (MTGA) is an home built technique used to study the thermal decomposition of inorganic solids, chemical properties of intermediate and final products, synthetic conditions and synthesis of nanomaterials. The MTGA has additional features like controlled gas delivery system suitable for synthesis of nanomaterials in various gas atmospheres. This paper reports characterization of nano bismuth ferrite-BifeO3 (BFO) synthesized by MTGA. The MTGA system has been calibrated for BFO precursors. The variation in mass of redox mixture (metal nitrates and gylcene) with respect to temperature (thermogram) reveal the ideal conditions for the preparation of nano BFO by different techniques. It was found that structural and electrical results of BiFeO3 synthesized by MTGA are in good agreement with that prepared by other techniques like solution combustion method, sol-gel method, Pechini method, sonochemical method, hydrothermal method etc. The microcontroller based thermogravimetric analyser is one of the good techniques for the preparation of nanomaterials in different gas atmaspheres

Evaluation of the accuracy, precision and validity of hydrophylic vinyl polysiloxane impression material for bite mark analysis

The present study was undertaken to assess the accuracy, precision and validity of hydrophilic Vinyl Poly Siloxane [VPS] impression material for bite mark documentation and analysis. Medium body VPS impressions of maxillary and mandibular anterior teeth among thirty subjects were taken and dental stone casts prepared. Hollow volume overlays were made and metric analysis was done using advanced imaging software like Adobe Photoshop - 9 and Image J. These values were compared to the measurements taken from bite mark impressions of the same 30 individuals on wax wafers using light body VPS material. The mean differences in the parameters measured by the different techniques were compared using Intra Class Correlation Coefficients [ICCC]. Additionally validity parameters such as sensitivity, specificity, positive and negative predictive value were computed

Genetic Variability in Indian Spinach (Basella alba L.)

Evaluation of eleven germplasm lines of the Indian spinach (basella) revealed maximum leaf weight/plant in IIHR-1 (160.5g), followed by IIHR-18 (111.6g) and IIHR-3 (98.3g). Results of genetic studies revealed that phenotypic coefficient of variation was higher than genotypic coefficient of variation for all the traits studied, indicating environmental influence on expression of these characters. Moderate heritability along with high genetic advance was recorded for leaf weight and total plant weight, indicating the presence of additive gene effects. Hence, selection can be employed for improvement of these characters in basella. Higher plant weight was found to be significantly and positively associated with branch number, leaf number, leaf weight and stem weight. Leaf number had the maximum direct positive effect on total plant weight, followed by leaf length. Indirect effects of other characters through these characters were also seen to be positive. Thus, for yield improvement in basella, emphasis may be laid on indirect selection through leaf characters like leaf number, leaf length and leaf weight

Effect of III-Pass on Microstructure, Micro Hardness and Static Immersion Corrosion Resistance of AA6061-T6/SiCp Surface Composite Fabricated by Friction Stir Processing

In this current investigation, SiC particles 20μm in average size were incorporated into the commercially AA6061-T6 to prepare surface composite by using Friction stir processing (FSP). The morphology of the reinforcement inside the Al matrix has been evaluated from scanning electron microscope (SEM) and the corrosion characteristics of the resulted composite were evaluated using static immersion corrosion (SIC) behavior in 3.5% NaCl aqueous solution at various regimes. From the results, it observed that the SiC particles were distributed uniformly inside the stir zone (SZ) in both first and third-pass of FSP. The micro hardness of stir zone with SiC particles of I-pass was higher compared to III-pass and as-received Al alloy. In static immersion corrosion test the FSP AA6061-T6/SiCp exhibited significantly greater corrosion resistance in I-pass than compared to the III-pass and as-received Al alloy

Laparoscopic Approach to Vesicovaginal Fistula: Our Experience

AbstractIntroduction: Most Vesicovaginal fistulas  in the industrialized world are iatrogenic, Though they may also result from congenital anomalies, malignant disease, inflammation and infection, radiation therapy, iatrogenic (surgical) or external tissue trauma, ischemia, parturition and a variety of other processes. Vesicovaginal fistulas (VVF) represent, by far, the most common type of acquired fistula of the urinary tract. The goal of treatment of these fistulas is the rapid cessation of urine leakage with return of normal and complete urinary and genital function.Materials and Methods: Female patients presenting with iatrogenic Vesicovaginal fistula formed the study group. A detailed history and physical examination was carried out. Imaging included intravenous urogram, cystogram, computerised tomography, MR imaging and retrograde ureterogram as felt necessary.  Surgical repair of Vesicovaginal fistula was carried out through a laparoscopic approach.Results: 24 women presented with VVF, of these 19 underwent laparoscopic transperitoneal repair, whereas 5 underwent laparoscopic transvesicoscopic repair. The intraoperative blood loss was minimal (< 100 ml) and no major perioperative complications were noted. Conclusions: Minimally invasive approaches to repair vesico-vaginal fistulas are feasible, safe and associated with minimal blood loss, hospital stay and morbidity.Keywords: Laparoscopy, Minimally invasive, Vesicovaginal fistul

Li2SnO3 as a Cathode Material for Lithium-ion Batteries:Defects, Lithium Ion Diffusion and Dopants

Tin-based oxide Li2SnO3 has attracted considerable interest as a promising cathode material for potential use in rechargeable lithium batteries due to its high- capacity. Static atomistic scale simulations are employed to provide insights into the defect chemistry, doping behaviour and lithium diffusion paths in Li2SnO3. The most favourable intrinsic defect type is Li Frenkel (0.75 eV/defect). The formation of anti-site defect, in which Li and Sn ions exchange their positions is 0.78 eV/defect, very close to the Li Frenkel. The present calculations confirm the cation intermixing found experimentally in Li2SnO3. Long range lithium diffusion paths via vacancy mechanisms were examined and it is confirmed that the lowest activation energy migration path is along the c-axis plane with the overall activation energy of 0.61 eV. Subvalent doping by Al on the Sn site is energetically favourable and is proposed to be an efficient way to increase the Li content in Li2SnO3. The electronic structure calculations show that the introduction of Al will not introduce levels in the band gap